SURVIVAL STATUS & RISK FACTORS ANALYSIS OF PREMATURE HIGH RISK DELIVERIES

出生体重低于750克的婴儿存活率增加的趋势 (约1.5磅)表明并发症的发生率更高 与出生和持续的健康缺陷有关。奥弗派克博士记录了 美国的出生、随后的死亡和存活率的状况。 1983年的出生队列。她提供了背景和技术 支持迪梅斯进行曲的工作人员(Joann Petrini)完成 协作性分析评估患者存活率和死亡率的变化 这些极低出生体重的婴儿。该分析将比较 采用表面活性物质治疗前的基准年(1983年) 纳入表面活性物质治疗的实验阶段(1987-88)，以及 最近几年可获得的数据，其中包括与 表面活性物质和产前皮质类固醇治疗(1990-92)。死亡人数 对于在基线年份出生的体重低于750克的婴儿 (怀孕约24周)约占婴儿总数的25% 1983年的死亡率。超过40%的人在出生前六天死亡 来自这些最小、最不成熟的婴儿。

Trends toward increasing survival of infants born at less than 750 grams (about 1-1/2 pounds) have suggested higher prevalence of complications related to birth and continuing health deficits. Dr. Overpeck documented the status for the births, subsequent deaths, and survival in the U.S. birth cohort of 1983. She has provided background and technological support for staff of the March of Dimes (Joann Petrini) to complete the collaborative analysis to assess changes in survival and mortality of these extremely low birth weight infants. The analysis will compare the baseline years before introduction of surfactant therapy (1983), years incorporating the experimental phase of surfactant therapy (1987-88), and the latest years of available data which include births associated with both surfactant and antenatal corticosteroid therapy (1990-92). Deaths to infants born in the baseline years at weights less than 750 grams (about 24 weeks gestation) contributed about 25 percent of total infant mortality in 1983. Over 40 percent of deaths prior to six days of life were from these smallest least mature infants.